The weekly pocket money (in ₹) of 60 students is recorded below.
Class interval: 10–20 | 20–30 | 30–40 | 40–50 | 50–60 | 60–70
Frequency: 2 | 6 | 12 | 18 | 14 | 8
Answer the following questions.
(i) Prepare the cumulative frequency distribution for the data.
(ii) Locate the median class and calculate the median pocket money of the students.
(iii) Identify the modal class of the distribution.